Location reporting for user equipment

Abstract

Methods, systems, and devices for wireless communications are described. A base station may request a user equipment (UE) to report location information for the UE using a specific format. The UE may report the location information to the base station based on the request. The base station may use the location information reported by the UE to determine the location of the UE.

What is claimed is: 
     
       1. An apparatus for wireless communication, comprising:
 at least one processor; and 
 memory comprising codes executable by the least one processor to cause the apparatus to:
 obtain a request for the apparatus to report condensed location information of the apparatus, the condensed location information comprising fewer bits than information associated with a full global navigation satellite system coordinate of the apparatus; and 
 
 output, for transmission, the condensed location information based at least in part on location of the apparatus and the request, wherein the location of the apparatus is based on a coordinate differential that comprises a difference between a first geographic coordinate of a reference location and a second geographic coordinate of the apparatus, the request indicates the reference location, and the condensed location information comprises the coordinate differential. 
 
     
     
       2. The apparatus of  claim 1 , further comprising:
 a receiver configured to receive the request; and 
 a transmitter configured to transmit the condensed location information, wherein the apparatus is configured as a user equipment. 
 
     
     
       3. The apparatus of  claim 1 , wherein the location of the apparatus is based on a geographic coordinate comprising a set of digits,
 the request indicates a subset of digits of the set of digits, and 
 the condensed location information comprises a truncated version of the geographic coordinate that is based at least in part on the subset of digits. 
 
     
     
       4. The apparatus of  claim 3 , wherein the geographic coordinate represents a longitude of the apparatus or a latitude of the apparatus. 
     
     
       5. The apparatus of  claim 1 , wherein the at least one processor is further configured to cause the apparatus to:
 obtain the first geographic coordinate of the reference location from a base station. 
 
     
     
       6. The apparatus of  claim 1 , wherein the location of the apparatus is associated with an angle associated relative to a reference ray with a starting point at a reference location, wherein the request indicates the reference ray and the condensed location information comprises the angle. 
     
     
       7. The apparatus of  claim 6 , wherein the at least one processor is further configured to cause the apparatus to:
 obtain, from a base station, an indication of the reference location and an orientation of the reference ray associated with the reference location, wherein the reference ray is based at least in part on the indication of the reference location and the orientation. 
 
     
     
       8. The apparatus of  claim 6 , wherein the at least one processor is further configured to cause the apparatus to:
 obtain, from a base station, an indication of the reference location, wherein the reference ray is based at least in part on the reference location and an orientation of the reference ray associated with the reference location. 
 
     
     
       9. The apparatus of  claim 1 , wherein the condensed location information is outputted during a random access procedure or after the random access procedure is successfully completed. 
     
     
       10. An apparatus for wireless communication, comprising:
 at least one processor; and 
 memory comprising codes executable by the least one processor to cause the apparatus to:
 output, for transmission to a user equipment (UE), a request for the UE to report condensed location information of the UE to the apparatus, the condensed location information comprising fewer bits than information associated with a full global navigation satellite system coordinate of the UE; 
 obtain the condensed location information based at least in part on outputting the request; and 
 communicate with the UE based at least in part on location of the UE, wherein the location of the UE is based on a coordinate differential that comprises a difference between a first geographic coordinate of a reference location and a second geographic coordinate of the UE, the request indicates the reference location, and the condensed location information comprises the coordinate differential. 
 
 
     
     
       11. The apparatus of  claim 10 , wherein a subset of digits of a geographic coordinate is based at least in part on a threshold precision for a beam management procedure with the UE,
 the request indicates the subset of digits, and 
 the condensed location information comprises a truncated version of the geographic coordinate that is based at least in part on the subset of digits. 
 
     
     
       12. The apparatus of  claim 11 , the threshold precision is based at least in part on a size of a coverage area of a transmission beam of the apparatus, a shape of the coverage area, or a combination thereof. 
     
     
       13. The apparatus of  claim 10 , wherein the at least one processor is further configured to cause the apparatus to:
 output, for transmission to the UE, a first geographic coordinate for a reference location, wherein the condensed location information comprises a coordinate differential comprising a difference between the first geographic coordinate of the reference location and a second geographic coordinate of the UE. 
 
     
     
       14. The apparatus of  claim 13 , wherein the at least one processor is further configured to cause the apparatus to:
 select a center of a transmission beam of the apparatus as the reference location. 
 
     
     
       15. The apparatus of  claim 10 , wherein the request indicates a reference ray,
 the condensed location information comprises an angle of a position of the UE relative to the reference ray, and 
 the location of the UE is based at least in part on the angle. 
 
     
     
       16. The apparatus of  claim 15 , wherein the location of the UE is based at least in part on a propagation delay between the UE and the apparatus and the angle. 
     
     
       17. The apparatus of  claim 15 , wherein the at least one processor is further configured to cause the apparatus to:
 output, for transmission to the UE, an indication of a reference location associated with the reference ray, wherein the angle is based at least in part on the reference location and an orientation of the reference ray. 
 
     
     
       18. The apparatus of  claim 10 , further comprising:
 a receiver configured to receive the condensed location information; and 
 a transmitter configured to transmit the request, wherein the apparatus is configured as a base station. 
 
     
     
       19. An apparatus for wireless communication, comprising:
 at least one processor; and 
 memory comprising codes executable by the least one processor to cause the apparatus to:
 obtain a request for the apparatus to report condensed location information; and 
 output the condensed location information for transmission during a radio resource control connected state or a radio resource control connected state, wherein a location of the apparatus is based on a coordinate differential that comprises a difference between a first geographic coordinate of a reference location and a second geographic coordinate of the apparatus, the request indicates the reference location, and the condensed location information comprises the coordinate differential. 
 
 
     
     
       20. The apparatus of  claim 19 , further comprising:
 a receiver configured to receive the request; and 
 a transmitter configured to transmit the condensed location information, wherein the apparatus is configured as a user equipment.